British physicist Matt Taylor was brimming with excitement when the European Space Agency's Philae lander successfully separated from the Rosetta probe on Wednesday. He showed off a colorful ...

For the past few days, Granite Staters have been capturing great views of a comet just after sunset. 'Simpsons' voice actor is retiring after 35 years with the show Scientists analyze largest map ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A green-hued comet ...

This comet’s bright-green color may be caused by a type of gas that is boiling off it, said Matt Siegler, an adjunct professor at Southern Methodist University. “A lot has happened to humans ...

We’re talking about a real-life event that only happens once every 80,000 years in the Northern Hemisphere, so maybe try not to miss it: A comet not seen since the Stone Age is going to light up ...